[osx] Adapt mirrored-shortcut handling to 10.9 differences.

chrome/browser/global_keyboard_shortcuts_mac_unittest.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <AppKit/NSEvent.h>
 #include <Carbon/Carbon.h>
 
 #include "chrome/browser/global_keyboard_shortcuts_mac.h"
 
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 164 matching lines @@
       KeyEvent(false, false, false, false, @"8", @"8")));
   // '{' / alt-'8' on german
   EXPECT_EQ('{', KeyCharacterForEvent(
       KeyEvent(false, false, false, true,  @"{", @"8")));
   // cmd-'{' / cmd-shift-'[' on ansi
   EXPECT_EQ('{', KeyCharacterForEvent(
       KeyEvent(true,  true,  false, false, @"[", @"{")));
   // cmd-'z' / cmd-shift-';' on dvorak-qwerty
   EXPECT_EQ('z', KeyCharacterForEvent(
       KeyEvent(true,  true,  false, false, @"z", @":")));
-  // cmd-shift-'[' in an RTL context.
+  // cmd-shift-'[' in an RTL context pre 10.9.
   EXPECT_EQ('{', KeyCharacterForEvent(
       KeyEvent(true,  true,  false, false, @"{", @"}")));
+  // cmd-shift-'[' in an RTL context on 10.9.
+  EXPECT_EQ('{', KeyCharacterForEvent(
+      KeyEvent(true,  true,  false, false, @"[", @"}")));
   // Test if getting dead-key events return 0 and do not hang.
   EXPECT_EQ(0,   KeyCharacterForEvent(
       KeyEvent(false, false, false, false, @"",  @"")));
 }